will it be make or break for mitt romney? the political dream team, brokaw, gregory, todd here to weigh in. >> thirst, remember the guinness world attempt for the most pullups in 24 hours. there has been a significant development overnight. we will talk to david coming up. >>> we want to begin with the deadly shooting at a business in minneapolis. kevin tibbles is there. good morning to you. >> reporter: savannah, witnesses say the alleged 36-year-old gunman may have lost his job here at the accent sign company sometime yesterday morning. he then turned a quiet afternoon tragic, opening fire on fellow employees. by the time he was done, five people were dead, including the shooter who turned the gun on himself. police say a man opened fire inside a small sign company late thursday afternoon. a woman living near the business says one worker took shelter in her home for about 30 minutes. >> he came running up the side of the garage in the front, asked my husband if he could use a phone, said he was running from the shooter. he